How-to articles, tricks, and solutions about PYTHON

In Python, slicing refers to taking a subset of a sequence (such as a list, string, or tuple) by using indices to specify the start and end points of the slice.

In Python, a method is a function that is associated with a class.

To check if a list is empty in Python, you can use an if statement and the len() function.

Yes, Python has a string method called str.__contains__() that allows you to check if a string contains another string.

To create a flat list out of a list of lists, you can use the itertools.chain function from the itertools module in the Python standard library.

To access the index in a 'for' loop in Python, you can use the built-in 'enumerate' function.

To safely create a nested directory in python, you can use the os module and the makedirs function.

There are several ways to execute a program or call a system command in Python.

You can use the update() method of one dictionary to merge the key-value pairs from another dictionary into it.

Three approaches to find a file

Yes, Python has a ternary operator, also known as the conditional operator or the ternary conditional operator.

The special __name__ variable in Python is a string that contains the name of the current module. If the module is the main program, __name__ will be set to the string "__main__".

In Python, a metaclass is a class that defines the behavior of a class. When you create a class, Python automatically creates a metaclass for you behind the scenes. You can think of a metaclass as a blueprint for creating a class.

Python, the yield keyword is used in the body of a function like a return statement, but instead of returning a value and terminating the function, it yields a value and suspends the function's execution.